How to find Pre-foreclosures

[Imol Hoh]

Hello, im looking to invest in pre-foreclosures, probates, tax liens, etc and wondering how to attain those lists. I've been to and called several counties and have asked for these documents but have been looked at weirdly and also have been told no. They all tell me you need a first and last name. Is this true? Im looking to invest in the Ohio area such as Cinci, Cleveland, Ohio and etc. Thank you!